/*
 * Copyright 2005 MH-Software-Entwicklung. All rights reserved.
 * Use is subject to license terms.
 */
package com.jtattoo.plaf;

import java.awt.*;
import javax.swing.*;
import javax.swing.text.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.*;

public class BaseToggleButtonUI extends BasicToggleButtonUI {

	private static Rectangle viewRect = new Rectangle();
	private static Rectangle textRect = new Rectangle();
	private static Rectangle iconRect = new Rectangle();

	public static ComponentUI createUI(JComponent b) {
		return new BaseToggleButtonUI();
	}

	public void installDefaults(AbstractButton b) {
		super.installDefaults(b);
		b.setOpaque(false);
	}

	public void uninstallDefaults(AbstractButton b) {
		super.uninstallDefaults(b);
		b.setOpaque(true);
	}

	protected BasicButtonListener createButtonListener(AbstractButton b) {
		return new BaseButtonListener(b);
	}

	protected void paintBackground(Graphics g, AbstractButton b) {
		if (!b.isContentAreaFilled() || (b.getParent() instanceof JMenuBar)) {
			return;
		}

		int width = b.getWidth();
		int height = b.getHeight();
		ButtonModel model = b.getModel();
		Color colors[] = null;
		if (b.isEnabled()) {
			if (b.getBackground() instanceof ColorUIResource) {
				if ((model.isPressed() && model.isArmed()) || model.isSelected()) {
					colors = AbstractLookAndFeel.getTheme().getPressedColors();
				} else {
					if (model.isRollover()) {
						colors = AbstractLookAndFeel.getTheme().getRolloverColors();
					} else if (JTattooUtilities.isFrameActive(b)) {
						colors = AbstractLookAndFeel.getTheme().getButtonColors();
					} else {
						colors = AbstractLookAndFeel.getTheme().getInActiveColors();
					}
				}
			} else {
				if (model.isPressed() && model.isArmed() || model.isSelected()) {
					colors = ColorHelper.createColorArr(b.getBackground(), ColorHelper.darker(b.getBackground(), 50), 20);
				} else {
					if (model.isRollover()) {
						colors = ColorHelper.createColorArr(ColorHelper.brighter(b.getBackground(), 80), ColorHelper.brighter(b.getBackground(), 20), 20);
					} else {
						colors = ColorHelper.createColorArr(ColorHelper.brighter(b.getBackground(), 40), ColorHelper.darker(b.getBackground(), 20), 20);
					}
				}
			}
		} else {
			colors = AbstractLookAndFeel.getTheme().getDisabledColors();
		}
		JTattooUtilities.fillHorGradient(g, colors, 1, 1, width - 2, height - 2);
	}

	protected void paintText(Graphics g, AbstractButton b, Rectangle textRect, String text) {
		ButtonModel model = b.getModel();
		FontMetrics fm = g.getFontMetrics();
		int mnemIndex = model.getMnemonic();
		if (JTattooUtilities.getJavaVersion() >= 1.4) {
			mnemIndex = b.getDisplayedMnemonicIndex();
		}

		if (model.isEnabled()) {
			int offs = 0;
			if ((model.isArmed() && model.isPressed()) || model.isSelected()) {
				offs = 1;
			}
			g.setColor(b.getForeground());
			JTattooUtilities.drawStringUnderlineCharAt(b, g, text, mnemIndex, textRect.x + offs, textRect.y + offs + fm.getAscent());
		} else {
			g.setColor(Color.white);
			JTattooUtilities.drawStringUnderlineCharAt(b, g, text, mnemIndex, textRect.x + 1, textRect.y + 1 + fm.getAscent());
			g.setColor(AbstractLookAndFeel.getDisabledForegroundColor());
			JTattooUtilities.drawStringUnderlineCharAt(b, g, text, mnemIndex, textRect.x, textRect.y + fm.getAscent());
		}
	}

	protected void paintFocus(Graphics g, AbstractButton b, Rectangle viewRect, Rectangle textRect, Rectangle iconRect) {
		g.setColor(AbstractLookAndFeel.getFocusColor());
		BasicGraphicsUtils.drawDashedRect(g, 4, 3, b.getWidth() - 8, b.getHeight() - 6);
	}

	public void paint(Graphics g, JComponent c) {
		Graphics2D g2D = (Graphics2D) g;

		AbstractButton b = (AbstractButton) c;
		Font f = c.getFont();
		g.setFont(f);
		FontMetrics fm = g.getFontMetrics();
		Insets insets = c.getInsets();

		viewRect.x = insets.left;
		viewRect.y = insets.top;
		viewRect.width = b.getWidth() - (insets.right + viewRect.x);
		viewRect.height = b.getHeight() - (insets.bottom + viewRect.y);

		textRect.x = textRect.y = textRect.width = textRect.height = 0;
		iconRect.x = iconRect.y = iconRect.width = iconRect.height = 0;

		String text = SwingUtilities.layoutCompoundLabel(c, fm, b.getText(), b.getIcon(), b.getVerticalAlignment(), b.getHorizontalAlignment(), b.getVerticalTextPosition(), b.getHorizontalTextPosition(), viewRect, iconRect, textRect,
				b.getText() == null ? 0 : defaultTextIconGap);

		paintBackground(g, b);

		if (b.getIcon() != null) {
			if (!b.isEnabled()) {
				Composite composite = g2D.getComposite();
				AlphaComposite alpha = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.5f);
				g2D.setComposite(alpha);
				paintIcon(g, c, iconRect);
				g2D.setComposite(composite);
			} else {
				paintIcon(g, c, iconRect);
			}
		}

		if (text != null && !text.equals("") && textRect != null) {
			View v = (View) c.getClientProperty(BasicHTML.propertyKey);
			if (v != null) {
				Object savedRenderingHint = null;
				if (AbstractLookAndFeel.getTheme().isTextAntiAliasingOn()) {
					savedRenderingHint = g2D.getRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING);
					g2D.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, AbstractLookAndFeel.getTheme().getTextAntiAliasingHint());
				}
				v.paint(g, textRect);
				if (AbstractLookAndFeel.getTheme().isTextAntiAliasingOn()) {
					g2D.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, savedRenderingHint);
				}
			} else {
				paintText(g, b, textRect, text);
			}
		}

		if (b.isFocusPainted() && b.hasFocus()) {
			paintFocus(g, b, viewRect, textRect, iconRect);
		}
	}
}
